Texaco Inc.

Aqua Process, Inc.

Howard J Platte

Ralph P Chesluk

Avilino Sequeira, Jr

Edward C Brink, Jr

Charles M Staley

Verle E Cornish

Amines are injected in hydrocarbon processing units to remove and/or to prevent the formation of ammonium salt deposits. Furthermore, oxygen containing hydrocarbon compounds are injected in hydrocarbon processing units to remove metal compound deposits. The amines and/or the oxygen containing compounds may be injected alone or in combination. Furthermore, the amines and/or the oxygen containing compounds may be used in combination with filming agents that are suitable for corrosion control in such units.

Method and composition for the removal of ammonium salt and metal

Lubricating oils suitable for use in refrigeration equipment in admixture with fluorinated hydrocarbon refrigerants are produced by solvent extraction of naphthenic lubricating oil base stocks, cooling the resulting extract mixture, optionally with the addition of a solvent modifier, to form a secondary raffinate and a secondary extract, and recovering a dewaxed oil fraction of lowered pour point from the secondary raffinate as a refrigeration oil product. The process of the invention obviates the need for a separate dewaxing operation, such as dewaxing with urea, as conventionally employed for the production of refrigeration oils.

Manufacture of refrigeration oils

Refrigeration oils are prepared by subjecting a crude lubricating oil fraction to mild hydrogenation, acid treating, dewaxing and clay percolation.

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Houston, TX, United States of America

Howard J Platte